EP2194276A3 - Two-shaft vacuum pump - Google Patents

Two-shaft vacuum pump Download PDF

Info

Publication number
EP2194276A3
EP2194276A3 EP09014529.3A EP09014529A EP2194276A3 EP 2194276 A3 EP2194276 A3 EP 2194276A3 EP 09014529 A EP09014529 A EP 09014529A EP 2194276 A3 EP2194276 A3 EP 2194276A3
Authority
EP
European Patent Office
Prior art keywords
shaft
vacuum pump
piston
shaft vacuum
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09014529.3A
Other languages
German (de)
French (fr)
Other versions
EP2194276A2 (en
EP2194276B1 (en
Inventor
Frank Hotopp
Ronald Dr. Sachs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer Vacuum GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Publication of EP2194276A2 publication Critical patent/EP2194276A2/en
Publication of EP2194276A3 publication Critical patent/EP2194276A3/en
Application granted granted Critical
Publication of EP2194276B1 publication Critical patent/EP2194276B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Die Erfindung betrifft eine Vakuumpumpe mit einer ersten Welle (10), einem damit verbundenen ersten Kolben (12), einer zweiten Welle (14), einem damit verbundenen zweiten Kolben (16), einem Antrieb (54, 56), welcher wenigstens eine Welle in Drehung versetzt, wobei beide Wellen gegenläufig mit gleicher Frequenz drehend in Rotation versetzt sind, und wenigstens einem Lager (22, 24, 26, 28) zur drehbaren Unterstützung einer Welle. Um die Gefährdung durch eine Berührung der Kolben untereinander oder mit dem Gehäuse zu verringern, schlägt die Erfindung vor, dass zwischen Kolben und Lager eine Freigabestruktur vorgesehen ist.

Figure imgaf001
The invention relates to a vacuum pump having a first shaft (10), a first piston (12) connected thereto, a second shaft (14), a second piston (16) connected thereto, a drive (54, 56) which has at least one shaft rotated, wherein both shafts are rotationally offset in opposite directions at the same frequency, and at least one bearing (22, 24, 26, 28) for rotatably supporting a shaft. To reduce the risk of contact between the pistons with each other or with the housing, the invention proposes that a release structure is provided between the piston and the bearing.
Figure imgaf001
EP09014529.3A 2008-12-04 2009-11-20 Two-shaft vacuum pump Active EP2194276B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008060539A DE102008060539A1 (en) 2008-12-04 2008-12-04 Two-shaft vacuum pump

Publications (3)

Publication Number Publication Date
EP2194276A2 EP2194276A2 (en) 2010-06-09
EP2194276A3 true EP2194276A3 (en) 2014-08-27
EP2194276B1 EP2194276B1 (en) 2020-09-09

Family

ID=41796156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09014529.3A Active EP2194276B1 (en) 2008-12-04 2009-11-20 Two-shaft vacuum pump

Country Status (2)

Country Link
EP (1) EP2194276B1 (en)
DE (1) DE102008060539A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810419C (en) * 1949-01-01 1951-08-09 Otto Becker Rotary piston blower
US3558246A (en) * 1968-11-07 1971-01-26 Goeppner Kaiserslautern Eisen Rotary pump for viscous fluids
JPS59160084A (en) * 1983-03-02 1984-09-10 Nippon Denso Co Ltd Rotary fluid pressurizing and sending device
DE3411931A1 (en) * 1983-09-30 1985-04-25 Aisin Seiki K.K., Kariya, Aichi BLOWER OF THE ROOTS DESIGN
EP0209788A2 (en) * 1985-07-26 1987-01-28 Toyota Jidosha Kabushiki Kaisha A roots type pump
WO1997012158A1 (en) * 1995-09-28 1997-04-03 Muellenberg Ralph Torque-transmitting arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662826A (en) * 1984-04-20 1987-05-05 Tokico Ltd. Vacuum pump system including serially connected rotary and reciprocating vacuum pumps
DE19807923A1 (en) * 1997-03-03 1998-11-12 Luk Fahrzeug Hydraulik Compressor for vehicle air conditioning unit
JPH10259830A (en) * 1997-03-21 1998-09-29 Toyota Autom Loom Works Ltd Power transmission structure
JP2005226451A (en) * 2004-02-10 2005-08-25 Zexel Valeo Climate Control Corp Torque transmission device of compressor
DE102005057618A1 (en) * 2005-12-02 2007-06-06 Pfeiffer Vacuum Gmbh Method for operating a vacuum pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810419C (en) * 1949-01-01 1951-08-09 Otto Becker Rotary piston blower
US3558246A (en) * 1968-11-07 1971-01-26 Goeppner Kaiserslautern Eisen Rotary pump for viscous fluids
JPS59160084A (en) * 1983-03-02 1984-09-10 Nippon Denso Co Ltd Rotary fluid pressurizing and sending device
DE3411931A1 (en) * 1983-09-30 1985-04-25 Aisin Seiki K.K., Kariya, Aichi BLOWER OF THE ROOTS DESIGN
EP0209788A2 (en) * 1985-07-26 1987-01-28 Toyota Jidosha Kabushiki Kaisha A roots type pump
WO1997012158A1 (en) * 1995-09-28 1997-04-03 Muellenberg Ralph Torque-transmitting arrangement

Also Published As

Publication number Publication date
DE102008060539A1 (en) 2010-06-10
EP2194276A2 (en) 2010-06-09
EP2194276B1 (en) 2020-09-09

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